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( No Model.) a Sheets-Sheet 1.

F. W. TUEBK, Jr.

ROTARY WATER METER.

No. 362,047. Patented Apr. 26, 1887.

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P. W. TUERK, Jr.

ROTARY WATER METER.

No. 362,047. Pafl cent ed Apr. 26, 1887.

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(No Model.) 3 Shets-8heet 3.

P. W. TUERK, Jr.

ROTARY WATER METER. 7 No. 362,047. Patented Apr. 26, 1887.

UNITED STATES YORK.

PATENT OFFICE.

FREDERICK W. TUERK, JR, OF SYRACUSE, ASSIGNOR OF TlVO-THIRDS TO JOHNHUNTER AND JAMES C. HUNTER, 2D, BOTH OF STERLING, NEIV ROTARY WATER-METER.

SPECIFICATION forming part of Letters Patent No. 362,047, dated April26,1887.

Application filed May 29, 1836. Serial No. 203,667. (No model.)

To aZZ whom, it may concern:

Be it known that I, FREDERICK W. TUERK, Jr., of Syracuse, in the countyof Onondaga, in the State of New York, have invented new and usefulImprovements in Rotary \Vater- Meters, of which the following, taken inconnection with the accompanying drawings, isa full, clear, and exactdescription. V This invention has special reference to the water-meterfor which I have obtained Letters Patent of the United States No.328,544, dated October 20, 1885.

The object of my present invention is to render said meter more positiveand more accu- 1 5 rate and reliable in its operation and free frompulsations or noise in its actions, which object I attain, first, in animproved form of the rotary piston and in novel devices for positivelymaintaining the movable partitions or gates in contact with said piston,and, secondly, in

the arrangement of auxiliary discharge-channels leading from the spacebetween the movable gates through the cover of the ease and to theeduction-port of the case, all as hereinafter more fully described, andspecifically set forth in the claims.

In the annexed drawings, Figurel is a transverse section of my improvedwater-meter. Fig. 2 is a longitudinal section on'line a" :r, Fig. 0 1.Fig. 3 is a transverse section showing the piston in a differentposition. Fig. 4 is a detached face View of one of the heads of thecase.

Fig. 5 is a sectional view of one end of-the piston and adjacent end ofthe case, showing the 3 5 auxiliary dischargeopening from the casebetween the two gates; and Fig. 6 is a detached perspective view of thepiston.

Similar letters of reference indicate corresponding parts.

A represents the shell or casecontaining the mechanism of the meter. Thelower and greater portion of the interior of said case is of cylindricalform, and the upper portion is formed with a cavity, A, in the center ofone side of which is the induction-port B, and from the latter projectsthe screw-threaded thimble for the attachment of the water-pipe. Beneaththe opposite side of the cavity A, and slightly above a pointdiametrically opposite the induction-port B, the case A is provided withthe ednction-port G, from which also projects a thimble for theattachment of the water-discharge pipe.

I denotes the rotary piston, which is pivoted to the ends of the case A,central of the cylindrical portion thereof. Said piston is of the formof a hollow cylinder, from two diametrically opposite sides of whichproject two wings or flanges, P, extending from end to end of the pistonand having their longitudinal outer'edges in proximity to thecylindrical portion of the case A. Each of said wings is formed withrecesses r r at opposite sides thereof and extending from the free edgeof the wing part way toward the cylindrical portion of the piston. Therecesses r r on one side alternate with those on the other side in theirrelative positions, and the recesses on one and the same side of the twowings I? are in line with each other. The sides of the wings P, whichface in the direction in which the piston rotates, and which willhereinafter be referred to as the front of the wings, have the portionadjacent to the free edge convexed and joined with the cylindricalportion of the piston by a reverse-curved or slightly-concaved portion,for the purpose hereinafter explained.

D D represent two gates or movable parti tions extending from end to endof the case A and parallel with the axis of the piston. Said gates arehinged to theinterior of the case by cylindrical enlargements along oneof the longitudinal edges of the gates fitted to corresponding sockets,which are also extended from end to end of the case and form water tighthinges for the gates. One of these gates is arranged along the side ofthe cavity A farthest from the induction-port B, and the other gate, D,is located between the gate D and the induction-port and in proximity tothe latter. The free edges of both gates are inclined toward theinduction-port side of the case, and are required to be held in constantcontact with the sides of the piston 1?. This I have heretoforeaccomplished either by weighting the free edges of the gates, so as tohold them down by gravity, or by springs pressing on the gates; but inpractice I have found that in either case the action of the gates wasnot sufficiently reliable, and I therefore have now devised morepositively-operating means for maintaining the gates in contact with thepiston, said means consisting of levers Z I, which are pivoted at ornear their centers to the interior of the case A, preferably at thecenter of the length of the latter, and have their ends curved towardthe piston P and gates D D, so that one end of said levers will beimpinged and crowded outward by the wings P traversing the same duringthe rotation of the piston P, and the opposite end of the lever willthereby be pressed upon the gate and thus force the same toward thepiston and hold it in contact therewith.

At opposite sides of the gate D, and outside of the periphery of thecylindrical portion of the piston, are two ports, I I, in the inner sideof each end plate or head of the case A, and inside of said head areformed two channels, which converge and terminate in two ports, I 1,side by side,with a partition between them in the same side of the headand inside of the periphery of the cylindrical portion of the piston P,and in the ends of said portion of the piston, and at pointsdiametrically opposite each other, are passages 12 a, coinciding withthe two ports I I.

The operation of my improved meter mechanism thus far describedis asfollows: Assuming the piston P to stand in the position shown by fulllines in Fig. l of the drawings at the time when the water is started toflow from the eduction-port C of the case A, the water entering thecaseA through the induction-port B will exert its force on the gate Dand on the wing P',which at that time lies in front of said gate. Thegate, being held in contact with the cylindrical portion of the piston,resists the passage of the inflowing water toward the cavity A"andthrows the entire force of the water on the aforesaid wing P of thepiston, and thereby causes said piston to be rotated on its axis. As thesaid wing traverses the eduction -port 0 the water back of the wing willemerge through the said port. Simultaneously with this movement of thepiston the second wing, P, passes the gate D, and when said wing arrivesat the position indicated by dotted lines in Fig. 1 of the drawings aportion of the water entering the case A through the induction-portBescapes through the recesses r r in the back of the wing P, and thussaid portion of water enters the recess A. The pressure of the water onthe wing P impels the piston in its revolution, and as the wing Ptraverses the free end of the lever Z the opposite end of the latter iscaused to press on the gate D, so as to hold it in contact with thepiston while the wing P moves from it. As the cylindrical portion of thepiston approaches said gate the latter swings toward the cavity A andentraps therein the water which has entered through the recesses a" inthe back of the wing P. The gate D, being still under the pressure ofthe lever Z,

causes said gate to impart pressure to the entrapped water, which,however, is immediately released by the passages a n in the ends of thepiston coming in coincidence with the ports I I in the heads of the caseA, wh ch allows the said water to escape from the cavity A through oneof the ports I, then through one of the channels inside of the head andthrough one of the ports I, thence through the passage n in the end ofthe piston, then back through the other channel in the head, and throughthe port I back of the gate D from whence it passes through theeductionport 0. It will be observed that during this movement the gateis operated positively by the lever Z and is relieved from back-pressureby the release of the entrapped water, and by the hereinbefore-describedpeculiar curvilinear front face of the wing P the gate recelves thepressure from the lever Z gradually, and when applied said pressure ismaintained uniform; hence the operation of the meter 1s posltlve,accurate, and free from pulsatlons.

I provide the case A with a supplemental cavity, G, similar to thatshown in my prior patent hereinbefore referred to, for the collection ofsediment which may accompany-the water entering the case. Saidsupplemental cavity is provided with a discharge-opening through whichto remove the sediment and is closed by a removable stopper.

The registering mechanism is 1nclosed in a supplemental case, A, securedto the case A. Said mechanism may be of any sultable or well-knownconstruction, and as it does not constitute any part of my presentinvention, and is immaterial to the proper understanding of theimprovements herein descr1bed, 1t 1s deemed unnecessary to describe saidreglstering mechanism. It receives its motion from a helical thread onone of the trunnions of the piston P engaging a pinion, e, on the end ofa shaft, '10, which. by means of a gear en the opposite end of saidshaft, tISJIJSIDIlES mOtlOH to the train of gearing of the registerlngmech anism.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In combination with the case A A, r tary piston P P, and gates D D,the levers Z Z, pivoted to the case and having one end engaging thepiston and the opposite end bearing on the gates, substantially as setforth and shown.

2. In combination with the case A, provided with the cavity A, rotarypiston P P,- and gates D D, the heads of-the case provided with ports II, and with convergent internal passages terminating in ports I I, andpass sages in the ends of the piston coinciding with the ports I I,substantially as described and shown.

3. In combination with the case A, provided with the cavity A, thepiston P, having wings P P, with reverse-curved front faces, thegates DD, the levers Z Z, for operating said IIC IIS

gates, the heads of the case provided with my name and affixed my seal,in the presence at Syracuse, in the IO ports I I, and with convergentinternal pasof two attesting witnesses,

the State of New sages terminating in ports I I and passages county ofOnondaga, in

York, this 20th day of May, 1886.

in the ends of the piston coinciding with the 5 ports I I, allconstructed and combined sub- FREDERICK W. TUERK, JR. [n s.]

stantially in the manner and for the purposes Vitnesses:

FREDERICK H.- GIBBS,

E. G. CANNON.

set forth.

In testimony whereof I have hereunto signed

